package com.liang.exam.utils;

import com.auth0.jwt.JWT;
import com.auth0.jwt.algorithms.Algorithm;

import java.util.Date;
import java.util.Map;

public class JwtUtil {

    private static final String KEY = "itheima";
	
	//接收业务数据,生成token并返回
    public static String genToken(Map<String, Object> claims) {
        return JWT.create()
                .withClaim("claims", claims)
                .withExpiresAt(new Date(System.currentTimeMillis() + 1000 * 60 * 60 ))
                .sign(Algorithm.HMAC256(KEY));
    //创建一个jwt
    }

	//接收token,验证token,并返回业务数据
    public static Map<String, Object> parseToken(String token) {
    return JWT.require(Algorithm.HMAC256(KEY))
            .build()
            .verify(token)
            .getClaim("claims")
            .asMap();

}

}
